package test;

public class YootkDemo9 {
    public static void main(String[] args) throws Exception{
        String str = "yU*()&*()@JKILoFFLKFSD*(o*()@#t*(@U*()@$@#@K";
        String regex = "[^a-z]";
        System.out.println(str.replaceAll(regex, ""));
        }
    }
